Q&A for How to Create a Volcano in Minecraft

Of course! You can use lava to secure your home sweet home.

Yes, you can. Place a dispenser and tap/right-click it. Drag a lava bucket into any slot. Activate it via redstone.

Yes, as long as you don't use sand or a block that falls, otherwise the volcano will fall.

Yes. Just follow these steps but put TNT at the hole in the top to keep water out. When you activate the lava, the TNT will explode, pushing lava into the air shortly before the water rushes in and makes it all become rock.

Yes. You set up the dispenser with redstone leading to it. Use whatever kind of trigger you would like to activate the redstone. Then take bucket after bucket of lava and put them in the dispenser. Activate the redstone and enjoy.

Yes, just use a TNT dispenser or ignite TNT above the volcano with flint and steel or put TNT inside the volcano, then add lava.

It really depends on the size. A small-to-medium sized build could take anywhere from a few minutes to a few hours irl (including the time taken to gather resources), while mega-builds can take days or weeks, maybe even months/years if sufficiently large enough.

Yes, you can, using any of the eruption methods shown in the article. You can use pistons, TNT, dispensers, etc.